title: [Development of the glucocorticoid secretion of the adrenal glands of normal chick embryo and after late decapitation].
abstract: The competitive protein-binding assay of glucocorticoids in Chick embryo shows a significant increase of these adrenal hormones in plasma by day 13 of incubation. From the effects of the hypothalamo-hypophysis axis removal by late decapitation, we may conclude an hypophyseal control on the adrenal gland on the 13th day. The following decrease of plasmatic hormone concentration might be due to a negative feed-back. The pituitary hormonal control appears again by day 19 of incubation.
mesh_terms: D000311:Adrenal Glands / Q000196:embryology / Q000378:metabolism*; D000818:Animals; D002642:Chick Embryo; D005938:Glucocorticoids / Q000378:metabolism*; D007030:Hypothalamo-Hypophyseal System / Q000196:embryology / Q000502:physiology*; D013997:Time Factors
chemical_list: D005938:Glucocorticoids
vernacular_title: Evolution de la sécrétion en glucocorticoïdes de la surrénale chez l'embryon de poulet normal et après décapitation tardive.